In Tokyo, Osamu Shibata is married to Nobuyo, who live in poverty. Osamu receives occasional employment and Nobuyo has a low-paying job, but the family relies in large part on the grandmother’s pension. Osamu takes his son Shota shoplifting for groceries, and discover a girl, Yuri, homeless. Osamu takes Yuri to their home, where the family informally adopts her. However, the Tokyo police, aware Yuri is missing, begin to search for her.